It's being reported that the 5.1 on the new BD will be a remix with less overpowering foley.
(Not to mention that they seem to be forgoing the Harris-Katz restoration!)

Recently listening to the degraded mono on the 2005 DVD was much more pleasant than I thought. Essential actually. I've pondered getting the '85 LD but is it the same damaged audio? And how bad would the track be being non-CX analog? I've got a few discs from that era, my similar Universal analog only Double Indemnity doesn't sound bad.

This track does need to be preserved at optimal quality if possible, and I seriously doubt Universal will ever allow it out again. If necessary VHS or even that Beta might be the best way to salvage it. I only have the restored VHS, but I'll keep an eye out for anything else.